Sprayer device



l. CLARK.

SFRA-YER DEVICE- APPLlcATloN FILED Amas. 1920.

1,387,352. mallteam, 1921.

2 SHEETS-SHEET l I7? w72 fai;

d70-y 750% Z/ 9 y J. CLARK.

SPRAYER DEVICE.

`APPmcATloN FILED APR. 23. |920.

1,387,352. Patented Aug. 9, 1921-.

2 SHEETS-SHEET 2.

UNITED A`STATES PATENT OFFICE.

` ."JosErH CLARK, or :DE GRAFF, MINNESOTA.

` y SIRAYER DEVICE.

Specification of Letters Patent. Patent-ed Aug. 9, 1921.

y Applica/umana April 23,1920. serial No. 375,991.

To all whom t may concern: l l

Be it known that '1,5 osnrH CLARK, a citizen of the United States, residing at `De Graff, in the county of Swift andfSta-teof Minnesota, have invented certain new and useful Improvements in Sprayer Devices, of which the following is a specification.

. rThis invention relates Vto improvements in spraying apparatus, its .object being .par-

ticularlyfto provide aspray" attachment for Y .cultivators actuated in a simple manner from the wheel, to inaintainan air pressure for its spraying mechanism.

, `further object of he invention is to provide a device of' `the class Vdescribed, wherein Y the tank containing' the spraying liquid may be open to the atmosphere, the air pressure commonly utilized for forcing the liquid through the spraying nozzle being generatedV in aseparate comparatively small air chamber, they capacity thereof being suflicient only to maintain an uninterrupted port-ing wheels of the cultivator whichmay.

v be subjected toa large rangel of side thrusts and rackino" without bein@ rendered ino 3era i b ative, said connectionbeing applicable, `duel to its novel construction, to any vcultivator, absoluten vertical alinenient of the eccentric with the pumping driving shaft not being necessary. .y v

A further object of the invention is'. to

provide,.in a device of the yclass describeda ktank having but a single ,movable packed joint penetrating its walls for they purpose of operating the pumpingL mechanism, said joint being located'adjacent to the top of said tank -where the minimum internal water pressure exists.v

To this endk heinventioii consists of theV features of construction, combinationgand arrangenientof parts hereinafter particularly kdescribed and claimed. In the drawings Figure l is a vertical side view of the invention showing it mounted on the frame of a cult-ivator, the tank being shown partly in section. l

/ Fig. 2 is anuendview of the same, the tank beingV shown in section.

alone. c Y .f f

Fig. 4 is a perspective View of the rock shaft'v for the pump, and

Fig. 5 is a perspective View of they sup@ porting bar for the tank showing an adjustable Vhose support secured thereon.` Y

Fig. 3. is a perspective view of the tank sol A represents the frame of a cultivator, Bl

the axle thereofand C one ofthe Wheels supporting said frame. D designates a tank 0containing the spraying liquid, the level Vof the liquid being shown. (Fig l) near the top thereof, E the air container and F theeccentric rod. l

yThe tank is comparatively high and narrow and has an opening 1in the top thereof, a Vvertically disposed U bar extending upwardly over opposite sides-.thereofand being suitably bolted thereto.y Suitablyv se-V cured as by means of U bolts V,3 on the frame A of the cultiVatOr, is thesupporting chan-V nel bar 4 transversely disposed on said frame, theV upturned kchannel thereof receivingthe lower portion of the'U bar 2, the latter beingk suitably bolted thereto, so as to hold thetank 'inA upright position liatvvise longitudinally of the cultivator. Thetank ispositioned'onl the channelbar so 'as tofbe located adjacent to wheel C.,` Extending transversely [of the tank, kat the'top thereof and journaled'with one end` in kthe bracket/,f5 securedto the side wall ofthe tankand intermediate its ends, in the opposite wall ofthe tank and one leg of saidU bar, is the rock shaft 6, the latterfextending beyond said U bar so as to rigidly support, in approximately horizontal position on the outer end thereof, the crank arm 7 Bolted on the wheel spokes kby means of n the U bolts 8 is theU v shaped strap 9 having three. inwardly extending headed bearing pins 10 krigidly securedthereon, each pin rotatably; supporting a flanged roller or spool l1. The rollersare formed with comparatively wide faces so as to present a Wide rolling surface. Adapted to roll on the rollers,

CIK

, with, the rod being formed of two sections overlapping each other intermediate its ends, one of said sections having' suitable bolt holes 17 alined with the slottedholes 18 in the other section, so that the two sections may be bolted together. Thus, the rod may be extended or shortened as desired. The rollers 11 are preferably uniformly spaced circumferentially with ie'spectv to the eccentric strap, so as to afford a three point rolling contact with the latter. By making the eccentric strap of roundbar metal `and positioning the rollers in the manner described,1a large degree of inaccuracy is permissiblein the manufacture thereof, as the round bar presents a rounded edge toroll on the rollers, as distinguished from a flat bar eccentric strap journaled on a solid eccentric. It

has been found that the latter type of con-l struction is impractical in that itbiiids at the slightestA racking of the frame. AsA inb b dicatedin lFig. 2, the greatvainount of' side play afforded by the rollers, will permit `the eccentric'rod to be considerably out of alineinent with the Vcrank arm 7' without in any way interfering with the. operation ofthe pump.- Piercing the side ofthe tank D, and the strap 2, and iirmly bolted thereon so as to extend horizontally into the tank, is the hoek bolt 19, the hook thereof opening downwardly. 1 l

Gppositely disposed4 to the crank arm 7 and removably fitting over the squared portion 2O of the shaft 6, is the lever arm 21,v having a longitudinal disposed'slot 22-cutting through its plate-like outeriextremity.

Extending from the hook 19 to said lever arm, with its piston rod 23 projected through said 'slot 22 and beyond the-latter and being held loosely locked therein by means of theV washer' 24 and the pin 25, is the piston cylinder 26. The cylinder comprises aA compara-v tively long tubular body having a capclosure at its top, tliroughwhich the said'piston Vrod loosely extends, said body being .formed at its lower extremity with"` an ob"` long eye 27 adapted to removably receive the.

hook bolt 19 so as to pivot thereon. Secured to the piston rod vis the piston 28, the latter beingforced downwardly vin the cylinder by the coil spring 29 surrounding said rod, and.

abutting at opposite ends against said cap and piston, theA washer and pin 24 and'25` formingfa stop whcrebythe stress of the and has pivotal connection 16 theie.

spring is transferred to Vthe rock shaft. Thus, when the cultivator is moved, the eccentric rod reciprocates the rock shaft, the lever arm 21 on itsk downward stroke permitting the spring to advance the piston. The

vpiston is forced downwardly solely by the stress of the spring 29, the lever arm 21 functioning only to move the piston throughy its upward'stroke. Below the piston the cylinder. is formed withan intake opening 30 communicating with the chamber 31, the latter being in open communication with'- the inte- Y rior ofthe cylinder, 'said intake opening being closed interiorly by the ball lvalve 32. Communicating with the chamber 31 is the outlet opening 33, the'latter being closable by the` ball f valve 34 (constituting a check valve) inthe chamber 35, saidrchamb'er being inopen communicationwith the liexible hosemember 36,' the vlatter beingconnected with. the nipple 37 extending through the wall ofthe-ta'nk. -V Outside off the'tank, vand Isupported onlsaid nipple and in open communication withl thefinterior, thereof, is the air chamber 38, thev interior lof said nipple communicating also withthe hose 39 having a suitable closable spray nozzle Ll0 at the end thereof, the -spray `being controlled by the hand vwheel 40. Theflexilble hose member 3Gpermits thepump cylinder to bodilyoscillate, Vthe use of a hose obviatiiig the use ofv gasket packed elbow joints which latter would be necessaryif iron-pipes wereused.u

ltigidly'vbut removably mountedon the rock shaft, is the roller 42,' a. gasket 5LB-'be-` tween the latter and ythe wall of the container surrounding said shaft.l Alsof slidable laterally on the squared portion ofthe y rock `shavft,-;`is the agitator arm 44;, the latter extending downwardly to a point adjacent to the bottom of the tank and reciprocatingwith` the lrock shaft so 4'as to constantly agitate the spraying-liquid during 'the' operation of the pump. Surrounding-theshaft between the bracket 5 and the agitator arm, is the coil spring `15,thelatter being posii'io tioned understress so'as to press the collar #l2 against the gasket 43 to veffect a 'water tight joint around the rock shaft. By constructing 'the rock shaft with a square section the leverzarm 21 and the agitator'arm may be veasily removed endwise, the shaft `being insertible from vthe outside through the walls of the tank and into the bracket 5. A

`setyscrew 46 firmly holds theV collar rposi-V tioned on vthe shaft and is*v conveniently accessible through the openingl for the purpose of dis-assembling the pumping mechanism. In the supporting bar 4, and located `as Yto beeapproxim'ately central with the cul-v tivator is the slot 4:7 adapted to receive the `bolt 43 whereon is supported the jointed hose support G, the latter consisting of bars 49 and 50 pivotally connected with the boltJ t3-so as to beheld in extended position by sucking a lcpuantity of spraying liquidv through-the inlet 30 into the cylinder, and the spring` forcing said liquid at each stroke through .the bal'l'valve tfand the continuous conduit formefdiby the hose members 36 and 39, together with the nipple connection,l to the sprayer nozzle and out throughthe latter. vis `the area ofthe-perforation in the spray nozzleis comparatively small a back pressure is set up inthe interior of said conduit, whereby the air in the chamber 38 is compressed, so that during each suction stroke of the piston the pressure confined in the conduit by the ball valve 34 will maintain an uninterrupted spraying stream until the next succeeding stroke of vthe piston, when the operation will be repeated. Thus, the air in the chamber 38 is compressed with each forward stroke of the piston, the compressed air being sufficient only for maintaining a continuous spray during the return stroke ofthe piston. This obviates the necessity of having the main liquid containing tankconstructed so as to be air tight, as is the case in 'many of the spraying devices, it being` r difficult to keep a large vessel air tight, and it requiring con- 'sideiable preliminary pumping in preparing the device for service. Further, where a high air pressure must be maintained in the liquid container any packed .joints pertaining to the pumping mechanism, extending through the walls thereof, becomes a constant care because .of continuous leakage.

In applicants 'device but a single packing joint high up near the water levelv is utilized, the pressure at thatpoint being` very low and practically negligible. TWhen the pres-` sure in the chamber 38 overbalances the tension of the spring 29 the lever arm 2l will run freely back and forth over the piston rod. Y

rlhe cylinder oscillates on the hook bolt 19 and when detached from the rock shaft may be easily unhooked from above and bodily withdrawn through the opening l. rilius the device maybe shipped in knock-down forni and easily assembled by an unskilled person I i I claim; A f

l. In combination with the frame and a supporting wheel, an adjacently supported liquid container, a rock shaft withiny the Vcontainer proj ectingthrough the side at the top thereof, mechanism operatively connecting the wheel with said rock shaft to actuate the latter when the wheel is moved, a water pump having an intake and a discharge opening within the container operatively connected with said rock shaft to be operated drawn therethrough.

thereby and extending downwardly and having-pivotal support adjacent tothe bottomy of'said container tobe oscillated thereon, a

y discharge piperigid inthe side of said container and projecting therethrough, and a flexible connection within the container between the said discharge pipe and discharge opening. y

2; Invcombination with the frame and a supporting wheel, an adjacently supported vopen top liquid container, a rotatably mounted rock shaft within the container near said yopen top, said `rock shaft extending between opposite walls of the container and through an opening in one of said walls, packing means around said rock shaft adjacent said opening, mechanism operatively connecting the wheel with said rock shaft to actuate the latter when the wheel is moved, a discharge conduit extending through the wall of said container, pumping mechanism within the container operatively connected with said rock shaft and said discharge conduit,

and a springifor holding said rock shafty under stress against said packing means.

, 3. In combination with a frame and a supporting wheel, an adj acently supported open top liquid container, reciprocatory .mecha-` nism rotatably supported within the container adjacent the top thereof, said mecha- -nism constructed so as to be readily removable from said open top, means operatively. connecting said wheel with said reciprocaysaid pumping mechanism and the container,

whereby the pumping mechanism may be readily detached from the container from a position at said open top and bodily Withtory mechanism to reciprocate kthe latterv Vwhen the wheel'is moved, pumping mechamechanism leading to and Y Ll. Ina sprayer attachment ofthe class described the combination with the frame and a supporting .wheehan adjacent'ly supported liquid ycontainer, pumping mechanisni within the container, a reciprocatjory part thereof extending through the wall of the latter, Adischarge condpit for said pumping mechanism leading through the wall of the container, and actuating mechanism operatively connecting said extended vreciprocatory, part and said wheel to reciprocate said part whenthe wheel is moved,"

said actuating mechanism comprising-three equidistantly spaced comparativelyfwide faced flanged rollers arranged in a circle and supported on the Wheel so as to be eccentric with. the center thereof, an eccentric strap formed of har iron, of comparatively small sectional area encircling said three rollers s0 as to roll on the Wide faces thereof, and a longitudinally adjustableeccentric rod rigidly connected With said `eccen-` tric and .pivotallyconnected With said reciprocatory part. Y

5. rlhe combination with a frame and a supporting' Wheel, a liquid container supported on the frame, reciprocatory shaft including a crank arm, said shaft rotatably mounted at the top oiV the container, a connection between said Wheel and said shaft for reciprocating the latter when said Wheel is rotated, pumping mechanism having a discharge conduit leadingfto the outside of the container said pumping: mechanism having operative `connection With said crank arm and extending .from the latter into the liquid to a position adjacent the bottom of the container7 a pivotalsupport at the bottom of the container for the pumping mecha-y nism tov Venable the latter* to move torag'itate Athe liquid when said crank arm is actuated, vand additional liquid' agitating means eX- tending downwardly from said. reciprocatory shaft. y

In testimony whereof Ijaix my signature.

JOSEPH CLARK. 

